84974187 has 4 divisors (see below), whose sum is σ = 113298920. Its totient is φ = 56649456.

The previous prime is 84974173. The next prime is 84974191. The reversal of 84974187 is 78147948.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 84974187 - 2¹⁶ = 84908651 is a prime.

It is a super-2 number, since 2×84974187² = 14441224912621938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84974287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14162362 + ... + 14162367.

It is an arithmetic number, because the mean of its divisors is an integer number (28324730).

Almost surely, 2^84974187 is an apocalyptic number.

84974187 is a deficient number, since it is larger than the sum of its proper divisors (28324733).

84974187 is a wasteful number, since it uses less digits than its factorization.

84974187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28324732.

The product of its digits is 451584, while the sum is 48.

The square root of 84974187 is about 9218.1444445181. The cubic root of 84974187 is about 439.6384547236.

The spelling of 84974187 in words is "eighty-four million, nine hundred seventy-four thousand, one hundred eighty-seven".